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-rw-r--r--arch/x86/kvm/mmu/tdp_mmu.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index f77927b57962..e8c061bf94ec 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -1205,9 +1205,11 @@ static __always_inline bool kvm_tdp_mmu_handle_gfn(struct kvm *kvm,
/*
* Don't support rescheduling, none of the MMU notifiers that funnel
- * into this helper allow blocking; it'd be dead, wasteful code.
+ * into this helper allow blocking; it'd be dead, wasteful code. Note,
+ * this helper must NOT be used to unmap GFNs, as it processes only
+ * valid roots!
*/
- for_each_tdp_mmu_root(kvm, root, range->slot->as_id) {
+ for_each_valid_tdp_mmu_root(kvm, root, range->slot->as_id) {
rcu_read_lock();
tdp_root_for_each_leaf_pte(iter, root, range->start, range->end)